Apparatus for shaping glass articles



June 5, 1945. H. A. QWEXELL ETAL 2,377,534

APPARATUS FOR SHAPING GLASS ARTICLES Filed Jan. 23, 1942 2 Sheets-Sheetl 20 y la 30 52 a 3nventora June 5, 1945. wEXELL ETAL 2,377,534

APPARATUS FOR SHAPING GLASS ARTICLES Filed Jan. 23, 1942 2 Sheets-She etL/PPl/YG POSITION Lokwuve POSITIONS iicnhenlurs K My one anal/v6POSITION Qtturnep Patented June 145 ArPAaA'rUsFon SING GLASS narrowsHarold A. 'Wexell and Archibald H. MacLaren, Corning N. Y., assignors toCorning Glass Works, Corning, N. Y., a corporation of New YorkApplication Jan 23, 1942, Serial No. 428,002

7 Claims.

Th present invention relates to apparatus for shaping glass, and inparticular to means for altering'the shape of a, desired portion or poitions of articles which have been given a prelimi-- nary shape.

The prime object of the present invention is the production of reshapedarticles of improved quality.

Another object of the present invention has to do with an improved formof apparatus for the reshaping of glass articles.

The invention embodies among its features facilities tor progressivelyheating parts ofa plurality of articles to be reshaped, successivelybringing the reheated articles to a reshaping position, imparting thedesired shape to each article at such position, advancing a. reshapedarticle to an unloading position as another article is being associatedwith the reshaping apparatus and finally unloading the reshaped articleas the reshaping of another article is being effected.

The invention has herein been embodied in a structur suitable forforming no-drip pourin lips on measuring cups and the like.

Fig. 1 of the accompanying drawings is a plan view of a fragment of amachine embodying the invention;

Fig. 2 is a side elevational view of Fig. 1;

Fig. 3 is a iping diagram of the machine;

Fig. 4 is a plan view diagrammatically illustrating equipment forheating portions of articles and the positions at which the loading,heating, lipping and unloading occur; and Fig. 5 is a side'elevationpartly in section, of a can before the same has been llpped.

Referring now to Figs. 1 and 2, the operating parts of the apparatus arecarried by a base II and [by a fixed vertical shaft I! which passesthrough the axial center of a rotatable table l3 having ware holders idarranged about its periphery. The table It is arranged for rotation instep-bystep fashion as required to successively index holders it under alipping mecha nism comprising a lipping roller is carried by an axlepassing through one end of a link it and abled to move the formingroller back and forth over the path adorded by slot l1 which is made tocorrespond to the outline it is desired to impart to the inner surfacesof the lips to be formed in articles 33.

To bring the forming roller into lipping relation with an article and tomove the roller clear of the article after it is lipped the support 20has one end pivoted at 3| to a bracket 32 supported on shaft 12 and hasits other end attached to a link 34 connected with the drive rod of apneumatic power unit 33 adjustablysecured to a bracket 4| attached tothe base ll.

When forming a nor-drip form of lip, particularly on heavy walled waresuch as shown, conunit 40 to move the bar about its pivot 43 to bringmold 36 into and out of association with the article. To make positivethat mold 36 is brought in the exact position desired relative to thelipping mechanism, a. cap screw 42 is threaded into the under side ofsupport 20 in position to engage bar 31 when support 20 is in its downposi-' tion.

Each article holder I4 is provided with an unloading valve 46 whichbecomes positioned over the drive rod 41 of a ware lifting pneumaticpower unit 50 adapted to lift one lipped article clear of its holderwhile units 33 and 40 are being operated to associate roller I5 and mold36 with another article to be lipped. A push out device 5| equipped witha pneumatic power unit 52 is arranged to move the lifted article onto asuitable conveyor (not shown) while the pneumatic through a c slot ii ina cam plate it adjust ably fixed to a we mecism support it. The otherend of 11 it is coupled to the common pivot pin iijcining the adjacentends of two levers 2E and it. The opposite end of lever 25 is pivoted toa bracket 2! also adjustably fixed to support 23, whereas the oppositeend of lever 26 is coupled to the drive rod 2'! of a pneumatic powerunit it also fixed to support it. The ar rangement is such that thepower unit it! is an unit 28 is operating the lipping mechanism.Although device 52 is shown in the retracted po-, sition in Fig. 1,under operating conditions it is advanced to the forward position asunit 28 advances roller l5 to the forward position, as will be fullybrought out hereinafter. Air for operating power units 28 and 52 issupplied through a control valve 55. Valve 55 (Figs. 1 and 3) is ofconventional design comprising a cylinder A having exhaust apertures EX,an air inlet aperture A connected to an air pressure line and aperturesA and A through one or the other of which the valve supplies operatingair to one end of units 26 and 52 and through the remaining one of whichit exhausts the other end of the units to atmosphere through one of theapertures EX under control of a spool S shifted back and forth incylinder A by air supplied through passages in the ends of cylinder A.This latter air supply is through simple spring return poppet valveshaving operating extensions or buttons 56 and 56 actuated by earns 51and 59 attached to support 26. In Fig. I support 26 is shown in the downposition with cam 51 depressing button 56, whereas-in Fig. 3 the support26 is assumed to be in the up position with cam 59 holding button 56depressed.

The table indexing and locking mechanism is of well known form and inbrief comprises a pneumatic rotator unit 12 having a piston actuateddrive rod 12' linked to a, table indexing arm 13 provided with a tabledrive pin 1| adapted to enter apertures on the underside of table I3under the influence of an associated spring when the piston of unit 12is in a retracted position. When the table has been indexed a pull-downunit 69 having a piston actuated pull-down rod 1| is arranged towithdraw drive pin 1| from driving relation with the table so as toenable unit 12 to retract arm 13 preparatory to a subsequent indexingmovement. Operation of unit 12 is through a main operating valve 61which is similar to valve 55. The table is locked against rotation by apneumatic table locking unit 68 operated in multiple with unit 69.Operations of units 68 and 69 are by air supplied through a trip tablelock valve 66 which is also similar to valve 55. Air is supplied to theleft ends of valves 66 and 61-from the main air supply line 66 viavalves 65 and 6|. When air is supplied to the left end of valve 66 it isactuated to supply air to unit 66 to lower lock pin 16 and to unit 69 toraise pull-down rod 1|. When air is supplied to the left end of valve 61it is likewise actu,

ated to supply air to unit 12 to perform an indexing movement. Valve 66is actuated to supply air to unit 66 to raise its pin 16 to lock thetable and to unit 69 to restore pull-down rod 1| to the lowered positionby air supplied to the right end of the valve through a valve 15, in abranch of line 66, actuated :by rod 12' at the completion of an indexingmovement. Valve 15 is similar to valve 6|. Valve 61 is actuated tosupply air to unit 12, to retract its piston, by air supplied to theright end of the valve through a passage in unit 69 established bylowering of pull-down Units 33, 49 and 56 are adapted to be operated inunison by air supplied through a differential plunger control valve 66.Actuation of valve 86 to supply air to raise the pistons of units 33 and46 to disassociate the support 26 and mold 36 from a lipped article 36and application of air to unit 56 to lower the were raising rod 41 is bymeans of air supplied through a piston valve 11 adapted to be openedagainst spring tension by the piston of table rotator unit 12 as thepiston reaches its retracted position. Actuation of valve 66 to supplyair to effect the reverse movement of the pistons of units 33, 66 and 56is by means of air supplied through the cylinder of table looking unit68 when the piston of such unit is raised to lock the table.

In Fig. 3 the various units are indicated as being in the positions theyassume at the termination of an operating cycle which has resulted fromvalve 65 being in the closed position. For

" their respective mechanisms.

the purpose of describing the operation it will be assumed that controlvalve 65 is opened to supply air for initiating an operating cycle. Thevalve 65 may be operated manually or if preferred under control ofsuitable timing equipment. Irrespective of the manner of operation airis supplied to the left end of the trip table lock valve 66 and also .tothe left end of main operating valve 61. Valve 66 is shifted to supplyair to table lock and pull down units 66 and 69 as required to lower thetable lock pin 16 to enable movement of the table l3 and to raise'thepull down ii. The main operating valve 61 shifts to supply air to tablerotator 12 to perform its indexing operation. At the end of its forwardstroke its rotator arm 13 strikes button 14 of a valve 16 which thensupplies air to the right hand end of valve 66 so that the same shiftsto again supply air to units 66 and 69 to raise the table lock pin 16 tolock table l3 and to lower the pull down it to disengage the drive pin1| from the table. With pull down 1| in the lowered position it allowsair to be supplied to the right end of main operating valve 61 enablingit to supply air to the right end of rotator unit 12 to effect its backstroke. With the lock pin 16 in its raised position unit 68 supplies airto the left end of valve 89. Valve shifts to supply air to the upperends of units 33 and 46. Unit 33 accordingly lowers support 26 to bringthe lipping roller |5 into association with the next article 36 to belipped and unit 96 swings bar 31 as required to bring the mold 36 intoassociation with the article. Valve 86 also supplies air to the lowerend of unit 56 causing it to move its rod 41 to raise the article 36 atthe unloading position above its holder. As the support 26 arrives atits lowered position arm 51 actuates trip button 56 to shift valve 55 tosupply air to the rear ends of units 26 and 52 to cause these units toperform the lip forming and unloading functions.

At the end of the back stroke the rotator 12 passes air to the right endof trip valve 86 to cause it to shift and supply air to unit 33 to raisesupport 26 and thus disassociate the forming mechanism from the formedarticle 36, to supply air to unit 46 to lower mold 36 clear of thearticle lip, and to supply air to unit 56 to lower rod 41 and thuspermit the article raising valve 46 to be again seated in its holder:

As the support 29 arrives at its raised position arm 59 engages button56 to trip valve 55 to its left position to cause it to supply air tothe front ends of units 26 and 52 to operate them to restore Aspreviously stated restoration of the ware pusher mechanism opens valve6| thereby initiating a new cycle of operation-or at least conditioningthe system for initiation of a. cycle by actuation of valve 65.

As illustrated in Fig. 4 the proper heating of the portion of thearticles to be lipped comprises suitable burners arranged at asuccessive number of positions between the loading and lipping glass ofthe lip and that adjoining the opposite sides of the lip is likely to bethinner and therefore weaker than the remainder of the article wall. Toovercome this applicants prefer to form a cup with an extension ofmaterial 86 to be employed in forming the lip, as illustrated in Fig. 5.By providing the additional material 86 from which to form the lip theformer is not required' to draw glass away from the sidewall but insteadmerely is required to pull down the specially provided glass to theshape desired. A stronger lip is accordingly produced and weakening ofthe adjoining wall avoided. Also the capacity of the cup is not reducedas is the case when the lip is formed in a. cup of uniform wall height.v

Although in the foregoing there has been shown and described thepreferred embodiment of our invention, it is to be understood that minorchanges in the details of construction and combination of parts may beresorted to without departing from the spirit and scope of our inventionas claimed.

i What is claimed is:

1. In a glass working apparatus, a movable support, a lipping mechanismcomprising a plate fixed to said support and with a slot therethrough ofa contour of the outline of pouring lip channel desired, an axle passingtransversely through said slot, a lip forming roller supported by saidaxle, an operating link through which said axle passes, means for movingsaid support to bring said plate in such position relative to a suitablyheated portion of an article that movement of said roller from one endof the slot to the other will form a lip on the heated portion of thearticle, and means for actuating said link to move said roller from oneend of the slot "to the other.

2. In a glass working apparatus, a movable support, a lipping mechanismcomprising a plate fixed to said support and with a slot therethrough ofa contour of the outline of pouring lip channel desired, an axle passingtransversely through said slot, a lip forming roller supported by saidaxle, an operating link through which said axle passes, means for movingsaid support to bring said plate in such position relative to a suitablyheated portion of an article that movement of said roller from one endof the slot to the other will form a lip on the heated portion of thearticle, a mold for determining the shape to be imparted to the outersurface of the lip, means for moving said mold adjacent the outersurface of the heated portion of the article, and means for actuatingsaid link to move said roller from one end of the slot to'the other.

3. In a glass working apparatus, a movable support, a lipping mechanismcomprising a plate fixed to said support and with a slot therethrough ofa contour of the outline of pouring lip channel desired, an axle passingtransversely through said slot, a'lip forming roller supported by saidaxle, an operating link through which said axle passes, means for movingsaid support to bring said plate in such position relative to asuitablyheated portion of an article that movement of said roller from one endof the slot to the other 5 will form a lip on the heated portion of thearticle, a mold for determining the shape to be imparted to the outersurface of the. lip, means for moving said mold adjacent the outersurface of the heated portion of the article, means associated with saidsupport for establishing a desired relationship between said mold androller, and means for actuating said link to move said roller from oneend of the slot to the other.

4. In a glass working apparatus, a movable support, a lipping mechanismcomprising a plate fixed to said support and with a slot the'rethroughof a contour of the outline of pouring lip channel desired, an axlepassing transversely through said slot, a lip forming roller supportedby said axle, an operating link attached to said axle, means for movingsaid support to bring said plate in such position relative to a suitablyheated portion of an article that movement of said roller from one endof the slot to the other will form a lip on the heated portion of thearticle, and means under control of said support and support movingmeans for actuating said link to move said roller from one end of theslot to the other.

5. In a mechanism suitable for forming a lip on a previously heated wallportion of a glass container, a movable support, a plate associated withsaid support having a slot therethrough, a forming mechanism carried bysaid. support including a forming roller, an axle for said roller 35passing transversely through said slot, means for moving said support asrequired to bring one end of said slot into such position with respectto the heated portion of thearticle that by movement of the axle fromsaid one end of the slot to the other the roller will be wheeled overthe article surface in a manner to impart thereto a lip of an outlinecorresponding to that of said slot, and means for moving said axle fromone end of the slot to the other.

6. In an apparatus for shaping a pouring lip in the top of the sidewallof an open topped container, means for heating that portion of thecontainer to be lipped, a roller, means providing a path of movement forsaid roller corresponding to the outline it is desired to impart to thechannel ofthe lip to be formed, mechanism for moving said roller intothe interior of a piece of ware and adjacent the heated portion thereof,and mechanism for moving said roller over said path for the purpose setforth.

7. In a glass working apparatus, a rotatable table, a series of articleholders arranged in equally spaced relation about the peripheral surfaceof said table, a movable support arranged,

so over said table, a lip forming mechanism carried by said support,means for rotating said table in a step-by-step fashion to successivelybring said holders under said lip forming mechanism, a

power unit for moving said support to associate said lip formingmechanism with an article thereunder, and means actuated by saidsupport,

as it associates said lip forming mechanism with an article, to efiectthe actuation of said lip forming mechanism.

HAROLD A. WEXELL. ARCHIBALD H. MACLAREN.

